Autor(es)

Ramos, Clecio S. ; Silva, Marcilio W. F. ; Moraes, Marcilio M. ; Almeida, Argus, V ; Vanin, Sergio A. ; Kato, Massuo J.

• Tipo de documento: Artigo Científico
• Fonte: Journal of the Brazilian Chemical Society; v. 31, n. 4, p. 7-pg., 2020-04-01.

Resumo

Amides have been recognized as potent insecticidal natural products but, despite their variety of targets and mechanisms of action. their metabolic fate in insects is virtually unknown. The currently accepted hypothesis is that specialist herbivores are capable of biotransforming xenobiotics rendering them more polar and excretable while generalist insects do not have comparable capacity. The leaves from Piper tuberculatum. rich in insecticide amides, were offered to two insect species found on Piper leaves under natural conditions and also to four generalist grasshoppers in order to compare their capacity of biotransforming xenobiotics. The amides 1-7 were identified in the P. tuberculatum leaves and their corresponding carboxylic acids 8-13 were detected in frass samples of two host insects suggesting that these species promote the amides hydrolysis. The four generalist grasshoppers when offered P. tuberculatum leaves, starved to death after 72 h, indicating a strong antifeedant activity of P. tuberculatum leaves. (AU)

• Processo FAPESP: 09/51850-9 - Diversidade molecular em Angiospermas basais
• Beneficiário: Massuo Jorge Kato
• Modalidade de apoio: Auxílio à Pesquisa - Programa BIOEN - Temático
• Processo FAPESP: 14/50316-7 - Dimensões US-BIOTA São Paulo: diversidade de interações multi-tróficas quimicamente mediadas em gradientes nos trópicos
• Beneficiário: Massuo Jorge Kato
• Modalidade de apoio: Auxílio à Pesquisa - Programa BIOTA - Temático